Motorcycle officer seriously injured in crash with sedan

A police officer was seriously injured Monday when his motorcycle was involved in a crash with a sedan in Walpole, Massachusetts, according to police. The crash happened at approximately 12:45 p.m. at the intersection of Main and Spring streets. The officer sustained significant injuries and was flown to a Boston hospital via MedFlight. The driver of the car, a silver Toyota Camry, was uninjured and released after an evaluation, police said. The crash is under investigation.